Iterative Qubits Management for Quantum Index Searching in a Hybrid
System
- URL: http://arxiv.org/abs/2209.11329v1
- Date: Thu, 22 Sep 2022 21:54:28 GMT
- Title: Iterative Qubits Management for Quantum Index Searching in a Hybrid
System
- Authors: Wenrui Mu, Ying Mao, Long Cheng, Qingle Wang, Weiwen Jiang, Pin-Yu
Chen
- Abstract summary: IQuCS aims at index searching and counting in a quantum-classical hybrid system.
We implement IQuCS with Qiskit and conduct intensive experiments.
Results demonstrate that it reduces qubits consumption by up to 66.2%.
- Score: 56.39703478198019
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Recent advances in quantum computing systems attract tremendous attention.
Commercial companies, such as IBM, Amazon, and IonQ, have started to provide
access to noisy intermediate-scale quantum computers. Researchers and
entrepreneurs attempt to deploy their applications that aim to achieve a
quantum speedup. Grover's algorithm and quantum phase estimation are the
foundations of many applications with the potential for such a speedup. While
these algorithms, in theory, obtain marvelous performance, deploying them on
existing quantum devices is a challenging task. For example, quantum phase
estimation requires extra qubits and a large number of controlled operations,
which are impractical due to low-qubit and noisy hardware. To fully utilize the
limited onboard qubits, we propose IQuCS, which aims at index searching and
counting in a quantum-classical hybrid system. IQuCS is based on Grover's
algorithm. From the problem size perspective, it analyzes results and tries to
filter out unlikely data points iteratively. A reduced data set is fed to the
quantum computer in the next iteration. With a reduction in the problem size,
IQuCS requires fewer qubits iteratively, which provides the potential for a
shared computing environment. We implement IQuCS with Qiskit and conduct
intensive experiments. The results demonstrate that it reduces qubits
consumption by up to 66.2%.
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